CN107202186A - Opening pressure and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening and method - Google Patents
Opening pressure and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening and method Download PDFInfo
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- CN107202186A CN107202186A CN201710450101.2A CN201710450101A CN107202186A CN 107202186 A CN107202186 A CN 107202186A CN 201710450101 A CN201710450101 A CN 201710450101A CN 107202186 A CN107202186 A CN 107202186A
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- pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to engineering super-pressure inertia Open valve technical field, a kind of disclosed adjustable heavy caliber high speed inertia pressure relief valve of Opening pressure and amount of opening and method, the valve that this method is used is by valve body, valve element, hydraulic cavities piston is constituted, valve body outer tube wall sidepiece is provided with hydraulic cavities interface and atmospheric pressure cavity interface, heavy pressure gas chamber is provided with the valve body, hydraulic cavities, and valve body relief hole is provided with valve body, valve element relief hole is provided with valve element, sealing ring and buffering spacer, connection explosive load generator screw hole is provided with valve body, the pressure release passage of connection blast generator is provided with valve body, the hydraulic cavities of valve body are provided with piston locating rod.The present invention is made the direction of the gas pressure of explosive load generator generation be mutually perpendicular to valve core movement direction, can normally used in very big pressure limit using the form of ring opening.And the displacement of valve is reduced, the response speed and reliability of valve is improved, its is easy to use, and maintenance cost is low.
Description
Technical field
The present invention relates to engineering super-pressure inertia Open valve technical field, and in particular to explosive load simulative generator with to
The adjustable heavy caliber high speed inertia pressure relief valve of a kind of Opening pressure and amount of opening of constant-pressure and amount of opening quick pressure releasing and side
Method.
Background technology
In order to study the damage effect of explosive charge, it is necessary to simulate the explosive load of certain waveform requirements, explosive load
Crest generally in several ms to tens ms, in order to control the length of explosive load crest, explosive load generator is needed accurate
Pressure value corresponding time point quickly open pressure release passage, the general bore of pressure release passage of large-scale explosive load generator exists
100mm or so, explosive load crest pressure is up to 40MPa, and the inertia valve for opening pressure release passage is needed in valve port pressure
Start to open when reaching a certain setting Opening pressure value, the maximum open amount of unlatching can be prior in 0 ~ 100% according to requirement of experiment
Setting, once pressure is less than the Opening pressure value being previously set, the valve can close pressure release passage.In the market disclosure satisfy that
The predominantly adjustable-flow Pressure relief valve of function is stated, ripe flow spill valve can not meet requirements above at several aspects：
1. existing market be used for control the general latus rectum of overflow valve of Fluid pressure smaller, mostly below 16mm latus rectums.
2. existing overflow valve regulation amount of opening more trouble needs to be adjusted by screw thread.
3. the open theory of existing overflow valve for 100mm bores valve due to open when need the stroke of valve core movement
It is longer, and then cause opening speed relatively slow, it is necessary to which 1-2 seconds fully open, it is impossible to meet the function use requirement of equipment.
Requirement of the explosive load generator to inertia relief valve and the applying working condition of general overflow valve also have bigger difference, quick-fried
Fried payload generator pressure release is relatively low with inertia valve frequency of use（It may open once for several days）, therefore when can have longer preparation
Between.Inertia valve for explosive load generator is usually in normally off, is required during experiment when valve port pressure exceedes a certain set
Rapidly and accurately opened during definite value, therefore can be different from conventional overflow valve in structure.Due in explosive load generator
Hyperpressure is only kept the time of a few tens of milliseconds, therefore relief hole allows have micro leakage.
The content of the invention
In order to solve the above technical problems, it is an object of the invention to provide the adjustable big mouth of a kind of Opening pressure and amount of opening
Footpath high speed inertia pressure relief valve and method.
, it is necessary to quickly open pressure release when valve port pressure is higher than setup pressure value in explosive load generator test device
Passage, the diameter of pressure release passage is about 100mm or so, and pressure limit is 0-40MPa.In disclosed paper and related data not
See similar report, a set of heavy caliber high speed inertia pressure release that can be opened when setting pressure to the amount of opening specified is devised for this
Valve.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of adjustable heavy caliber high speed inertia pressure relief valve of Opening pressure and amount of opening, the pressure relief valve by valve body 2, valve element 5,
Hydraulic cavities piston 10 is constituted, and the sidepiece of valve body outer tube wall 2 is provided with hydraulic cavities interface 1 and atmospheric pressure cavity interface 13, the valve body 2 and set
Heavy pressure gas chamber 10 is equipped with, is provided with valve body relief hole 6, valve element 5 in hydraulic cavities 12, and valve body 2 and is provided with valve element relief hole
7th, it is provided with sealing ring 4 and buffering spacer 3, valve body 2 in connection explosive load generator screw hole 8, valve body 2 and is provided with connection
The pressure release passage 9 of blast generator, the hydraulic cavities of valve body 2 are provided with piston locating rod 11.
A kind of adjustable heavy caliber high speed inertia pressure relief valve of Opening pressure and amount of opening, the pressure release passage 9 is 80mm-
The passage of 200mm diameters.
A kind of adjustable heavy caliber high speed inertia pressure relief valve of Opening pressure and amount of opening, valve body 2 and valve element 5 ring
On the square hole position of four rows be actuator epithelium, the sectional dimension of actuator epithelium is bigger than the sectional dimension of pressure release passage 13 by 10%.
A kind of adjustable heavy caliber high speed inertia pressure relief valve of Opening pressure and amount of opening, the pressure release of the valve body and valve element
Valve port is the row of openings of ring 2 to 5.
A kind of method of the adjustable heavy caliber high speed inertia pressure release of Opening pressure and amount of opening, using explosive load intracavitary portion
Gas pressure be used as power source, when equivalent pressure is more than the equivalent pressure of heavy pressure gas chamber inside the blast chamber, the gas in blast chamber
Body produces acceleration to valve element, and thrust when accelerating is very big, can quickly promote valve element 5 to hydraulic cavities to position the position where piston
Put, that is, the amount of opening set；Specific implementation step is as follows：
First, the pressure release passage 9 of inertia relief valve bottom is connected with explosive load generator, passes through inertia relief valve knocker
To six hexagon socket head cap screws be fixedly connected in explosive load generator screw hole 8；Four wherein on valve body and valve element ring
Square hole position is arranged for actuator epithelium, the sectional dimension of valve port is bigger than the sectional dimension of pressure release passage by 10%；
Before experiment, the hydraulic oil of setting liquid level is filled with into hydraulic cavities by hydraulic cavities interface 1, relief valve is in and waits experiment
State；The position of wherein hydraulic cavities positioning piston 11 is fixed on the height of setting, and this highly determines inertia relief valve most
Big opening amount；
Moved up to allow valve element 5 to be opened in predetermined pressure value, open pressure release passage, added and set in heavy pressure gas chamber 10
The gases at high pressure of pressure, close heavy pressure gas chamber；Wherein valve element 5 starts quick movement in the pressure value of setting；Valve element 5 is moved
It is the fluid pressure rise and explosive load generation in stop motion, hydraulic cavities 12 when positioning the lower plane of piston 11 to hydraulic cavities
Device is equal to the axial force of valve element 5；In the state that valve port is closed, when the upward 15mm of valve element 5 can open valve port；
During experiment, the pressure rise of explosive load generator to it is equal to the power of valve element with gases at high pressure intracavitary gas when, valve element 5
Setting in motion opens pressure release passage；
Maximum pressure release amount of opening is reached when moving to hydraulic cavities positioning piston position, starts pressure release, blast chamber pressure is reduced, when
When the blast chamber pressure of pressure release passage 9 descends below the Opening pressure value of setting, gas push valve element 5 in heavy pressure gas chamber 10 to
Lower movement, to reduce the amount of opening of pressure release passage or close pressure release passage；
Inertia relief valve therein is the form of ring opening, the direction for the gas pressure that explosive load generator is produced and valve element
The direction of motion is mutually perpendicular to, and can normally be used in the pressure limit of blast；The valve port of the inertia relief valve is ring four
Row of openings, ensure that valve element in the case of 12mm thin tail sheeps, and the pressure release that unlatching is equal to 100mm diameter circular cross sections is led to
Reach, reduce the displacement of valve, improve the response speed and reliability of valve；The top liquid used in the inertia relief valve
Pressure chamber 12 is combined with hydraulic cavities positioning piston 11, and the stepless changing for realizing maximum open amount makes the overall anti-seismic performance of valve
It is good.
Due to using above-mentioned technical proposal, the superiority that the present invention is obtained is：
（1）The inertia relief valve uses the form of ring opening, the direction for the gas pressure that explosive load generator is produced and valve
The core direction of motion is mutually perpendicular to, therefore the valve can normally be used in very big pressure limit.
（2）The valve port of the inertia relief valve uses the row of openings of ring four, it is ensured that valve element can in the case of 12mm thin tail sheeps
Open be equal to 100mm diameter circular cross sections pressure release it is sensible, reduce the displacement of valve, improve valve response speed and
Reliability.
（3）The inertia relief valve realizes the stepless of maximum open amount using top hydraulic cavities 12 and hydraulic cavities positioning piston 11
Adjustment, easy to use, outward appearance is simply neat, and the overall anti-seismic performance of valve is good.
（4）The inertia relief valve is filled with the gases at high pressure of certain pressure to set the unlatching of valve body in heavy pressure gas chamber 10
Pressure, easy to use, maintenance cost is low.
（5）The unlatching of the inertia relief valve is realized using the linear motion of valve element, it is only necessary to which conventional seals form is
It can be achieved, reliability and cost performance are all higher.
Brief description of the drawings
Fig. 1 is Opening pressure and the adjustable heavy caliber high speed inertia pressure relief valve overall appearance schematic diagram of amount of opening；
Fig. 2 is the half section structure composition figure of inertia relief valve half opened condition；
In figure：Hydraulic cavities interface 1, valve body 2, valve element buffering spacer 3, seal spool and guide frame 4, valve element 5, valve body pressure release control
6th, valve element relief hole 7, connection blast generator screw hole 8, pressure release passage 9, heavy pressure gas chamber 10, hydraulic cavities positioning piston 11,
Hydraulic cavities 12, hydraulic cavities interface 13.
Embodiment
The invention will be further described with case study on implementation below in conjunction with the accompanying drawings, and certain following embodiments should not be construed as
Limitation of the present invention.
A kind of adjustable heavy caliber high speed inertia pressure relief valve of Opening pressure and amount of opening, the pressure relief valve is by valve body 2, valve
Core 5, hydraulic cavities piston 10 are constituted, and the sidepiece of valve body outer tube wall 2 is provided with hydraulic cavities interface 1 and atmospheric pressure cavity interface 13, the valve body 2
Heavy pressure gas chamber 10 is inside provided with, is provided with hydraulic cavities 12, and valve body 2 and to be provided with valve element on valve body relief hole 6, valve element 5 and let out
Press to be provided with hole 7, sealing ring 4 and buffering spacer 3, valve body 2 in connection explosive load generator screw hole 8, valve body 2 and be provided with
The pressure release passage 9 of connection blast generator, the hydraulic cavities of valve body 2 are provided with piston locating rod 11.The pressure release passage 9 is
The passage of 80mm-200mm diameters.The square hole position of four rows on valve body 2 and valve element 5 ring is actuator epithelium, actuator epithelium
Sectional dimension it is bigger than the sectional dimension of pressure release passage 13 by 10%.The valve port of the magnetic valve is the row of openings of ring 2 to 5.
The Opening pressure and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening, are positioned by valve body, valve element, hydraulic cavities
Piston, connecting bolt, buffering spacer, guide collar and sealing ring composition.The outward appearance overall diagram of inertia magnetic valve is shown in accompanying drawing 1, valve
The structure composition schematic diagram of semi-section is shown in accompanying drawing 2.
The middle and lower part of accompanying drawing 2 is connected for the pressure release passage of 100mm diameters with explosive load generator, and connection method is ring
Six hexagon socket head cap screws；The square hole position of four rows on valve body and valve element ring is actuator epithelium, and the sectional dimension ratio of valve port is let out
The sectional dimension of pressure passageway is big by 10%, and state is the semi-open state of valve port in figure, when the downward 7.5mm of valve element in figure can shutoff valve
Mouthful.In the state that valve port is closed, when the upward 15mm of valve element 5 can open valve port；For allow valve element 5 predetermined pressure value open to
The upper mobile gases at high pressure opened pressure release passage, certain pressure is added in heavy pressure gas chamber 10, valve element 5 can setting pressure
Value starts quick mobile；The liquid that valve element 5 is moved in i.e. stop motion when hydraulic cavities position the lower plane of piston 11, hydraulic cavities 12
Body pressure rise is equal to the axial force of valve element 5 with explosive load generator；Experiment before by hydraulic cavities interface 1 to
The hydraulic oil of setting liquid level is filled with hydraulic cavities, the position of hydraulic cavities positioning piston 11 is fixed on the height of setting, this height
Determine the maximum open amount of inertia relief valve.When the pressure of pressure release passage 9 descends below the Opening pressure of setting, high pressure gas
Gas push valve element 5 in body cavity 10 moves down the amount of opening to reduce pressure release passage or closes pressure release passage.
In use, using the gas pressure in explosive load intracavitary portion as power source, equivalent pressure is more than inside blast chamber
During the equivalent pressure of heavy pressure gas chamber, the gas in blast chamber produces acceleration to valve element, and thrust when accelerating is very big, can quickly push away
Movable valve plug 5 to hydraulic cavities position the position where piston, that is, the amount of opening set；Specific implementation step is as follows：
The pressure release passage 9 of magnetic valve bottom is connected with explosive load generator, passes through in six of electromagnetic valve ring six
Angle screw is fixedly connected in blast generator screw hole 8；
In the state that valve port is closed, when the upward 15mm of valve element 5 can open valve port；
Unlatching pressure release passage is moved up to allow valve element 5 to be opened in predetermined pressure value, is added in heavy pressure gas chamber 10 certain
The gases at high pressure of pressure, valve element 5 can start quick movement in the pressure value of setting；
The fluid pressure rise that valve element 5 is moved in i.e. stop motion when hydraulic cavities position the lower plane of piston 11, hydraulic cavities 12
It is equal to the axial force of valve element 5 with explosive load generator；
It is filled with the hydraulic oil of setting liquid level, hydraulic cavities positioning piston 11 before experiment into hydraulic cavities by hydraulic cavities interface 1
Position be fixed on the height of setting, this highly determines the maximum open amount of inertia relief valve.
When the pressure of pressure release passage 9 descends below the Opening pressure of setting, the gas push valve in heavy pressure gas chamber 10
Core 5 moves down the amount of opening to reduce pressure release passage or closes pressure release passage.
The valve port of the inertia relief valve used ensure that situation of the valve element in 12mm thin tail sheeps for the row of openings of ring four
Under, the pressure release that unlatching is equal to 100mm diameter circular cross sections is sensible, reduces the displacement of valve, improves the response speed of valve
Degree and reliability.
（1）The inertia relief valve uses the form of ring opening, the direction for the gas pressure that explosive load generator is produced
It is mutually perpendicular to valve core movement direction, therefore the valve can normally be used in very big pressure limit.
（2）The valve port of the inertia relief valve uses the row of openings of ring four, it is ensured that valve element can in the case of 12mm thin tail sheeps
Open be equal to 100mm diameter circular cross sections pressure release it is sensible, reduce the displacement of valve, improve valve response speed and
Reliability.
（3）The inertia relief valve realizes the stepless of maximum open amount using top hydraulic cavities 12 and hydraulic cavities positioning piston 11
Adjustment, easy to use, outward appearance is simply neat, and the overall anti-seismic performance of valve is good.
（4）The inertia relief valve is filled with the gases at high pressure of certain pressure to set the unlatching of valve body in heavy pressure gas chamber 10
Pressure, easy to use, maintenance cost is low.
（5）The unlatching of the inertia relief valve is realized using the linear motion of valve element, it is only necessary to which conventional seals form is
It can be achieved, reliability and cost performance are all higher.
Claims (5)
1. a kind of Opening pressure and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening, it is characterized in that：The pressure relief valve by
Valve body（2）, valve element（5）, hydraulic cavities piston（10）Composition, valve body outer tube wall（2）Sidepiece is provided with hydraulic cavities interface（1）And air pressure
Chamber interface（13）, the valve body（2）Inside it is provided with heavy pressure gas chamber（10）, hydraulic cavities（12）, and valve body（2）On be provided with valve body
Relief hole（6）, valve element（5）On be provided with valve element relief hole（7）, sealing ring（4）And buffering spacer（3）, valve body（2）On be provided with
Connect explosive load generator screw hole（8）, valve body（2）Inside it is provided with the pressure release passage of connection blast generator（9）, valve body
（2）Hydraulic cavities be provided with piston locating rod（11）.
2. a kind of Opening pressure according to claim 1 and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening, its
It is characterized in：The pressure release passage（9）For the passage of 80mm-200mm diameters.
3. a kind of Opening pressure according to claim 1 and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening, its
It is characterized in：The valve body（2）And valve element（5）The square hole position of four rows on ring is actuator epithelium, the sectional dimension of actuator epithelium
It is bigger than the sectional dimension of pressure release passage 13 by 10%.
4. a kind of Opening pressure according to claim 3 and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening, its
It is characterized in：The valve body（2）And valve element（5）Actuator epithelium be the row of openings of ring 2 to 5.
5. the unlatching of a kind of Opening pressure as claimed in claim 1 and the adjustable heavy caliber high speed inertia pressure relief valve of amount of opening
Pressure and the method for the adjustable heavy caliber high speed inertia pressure release of amount of opening, it is characterized in that：Using the gas in explosive load intracavitary portion
Pressure is as power source, when equivalent pressure is more than the equivalent pressure of heavy pressure gas chamber inside blast chamber, and the gas in blast chamber is to valve
Core produces acceleration, and thrust when accelerating is very big, can quickly promote valve element 5 to hydraulic cavities to position the position where piston, that is, set
Fixed amount of opening；Specific implementation step is as follows：
First, the pressure release passage 9 of inertia relief valve bottom is connected with explosive load generator, passes through inertia relief valve knocker
To six hexagon socket head cap screws be fixedly connected in explosive load generator screw hole 8；Four wherein on valve body and valve element ring
Square hole position is arranged for actuator epithelium, the sectional dimension of valve port is bigger than the sectional dimension of pressure release passage by 10%；
Before experiment, the hydraulic oil of setting liquid level is filled with into hydraulic cavities by hydraulic cavities interface 1, relief valve is in and waits experiment
State；The position of wherein hydraulic cavities positioning piston 11 is fixed on the height of setting, and this highly determines inertia relief valve most
Big opening amount；
Moved up to allow valve element 5 to be opened in predetermined pressure value, open pressure release passage, added and set in heavy pressure gas chamber 10
The gases at high pressure of pressure, close heavy pressure gas chamber；Wherein valve element 5 starts quick movement in the pressure value of setting；Valve element 5 is moved
It is the fluid pressure rise and explosive load generation in stop motion, hydraulic cavities 12 when positioning the lower plane of piston 11 to hydraulic cavities
Device is equal to the axial force of valve element 5；In the state that valve port is closed, when the upward 15mm of valve element 5 can open valve port；
During experiment, the pressure rise of explosive load generator to it is equal to the power of valve element with gases at high pressure intracavitary gas when, valve element 5
Setting in motion opens pressure release passage；
Maximum pressure release amount of opening is reached when moving to hydraulic cavities positioning piston position, starts pressure release, blast chamber pressure is reduced, when
When the blast chamber pressure of pressure release passage 9 descends below the Opening pressure value of setting, gas push valve element 5 in heavy pressure gas chamber 10 to
Lower movement, to reduce the amount of opening of pressure release passage or close pressure release passage；
Inertia relief valve therein is the form of ring opening, the direction for the gas pressure that explosive load generator is produced and valve element
The direction of motion is mutually perpendicular to, and can normally be used in the pressure limit of blast；The valve port of the inertia relief valve is ring four
Row of openings, ensure that valve element in the case of 12mm thin tail sheeps, and the pressure release that unlatching is equal to 100mm diameter circular cross sections is led to
Reach, reduce the displacement of valve, improve the response speed and reliability of valve；The top liquid used in the inertia relief valve
Pressure chamber 12 is combined with hydraulic cavities positioning piston 11, and the stepless changing for realizing maximum open amount makes the overall anti-seismic performance of valve
It is good.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710450101.2A CN107202186B (en) | 2017-06-15 | 2017-06-15 | Large-caliber high-speed inertial pressure relief valve with adjustable opening pressure and opening amount and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710450101.2A CN107202186B (en) | 2017-06-15 | 2017-06-15 | Large-caliber high-speed inertial pressure relief valve with adjustable opening pressure and opening amount and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107202186A true CN107202186A (en) | 2017-09-26 |
| CN107202186B CN107202186B (en) | 2023-03-03 |
Family
ID=59906938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710450101.2A Active CN107202186B (en) | 2017-06-15 | 2017-06-15 | Large-caliber high-speed inertial pressure relief valve with adjustable opening pressure and opening amount and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107202186B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763260A (en) * | 2017-10-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Relief valve and air-conditioning system |
Citations (5)
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|---|---|---|---|---|
| GB1440794A (en) * | 1972-10-10 | 1976-06-23 | Massey Ferguson Services Nv | Hydraulic unloading valve |
| US6263909B1 (en) * | 1993-05-28 | 2001-07-24 | Van Doan Nguyen | Valve assembly |
| US6581630B1 (en) * | 1998-12-28 | 2003-06-24 | Furukawa Co., Ltd. | Pressure control valve |
| CN103836220A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Self-sealing slide valve |
| CN106641306A (en) * | 2016-12-13 | 2017-05-10 | 中国人民解放军61489部队 | Rapidly-opened large-caliber ultra-high-pressure electromagnetic valve and method |
-
2017
- 2017-06-15 CN CN201710450101.2A patent/CN107202186B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1440794A (en) * | 1972-10-10 | 1976-06-23 | Massey Ferguson Services Nv | Hydraulic unloading valve |
| US6263909B1 (en) * | 1993-05-28 | 2001-07-24 | Van Doan Nguyen | Valve assembly |
| US6581630B1 (en) * | 1998-12-28 | 2003-06-24 | Furukawa Co., Ltd. | Pressure control valve |
| CN103836220A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Self-sealing slide valve |
| CN106641306A (en) * | 2016-12-13 | 2017-05-10 | 中国人民解放军61489部队 | Rapidly-opened large-caliber ultra-high-pressure electromagnetic valve and method |
Non-Patent Citations (1)
| Title |
|---|
| 赵春风等: "内爆荷载作用下钢筋混凝土安全壳的非线性响应分析", 《爆炸与冲击》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763260A (en) * | 2017-10-20 | 2018-03-06 | 珠海格力电器股份有限公司 | Relief valve and air-conditioning system |
| CN107763260B (en) * | 2017-10-20 | 2023-12-26 | 珠海格力电器股份有限公司 | Pressure relief valve and air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107202186B (en) | 2023-03-03 |
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